There are many competent readings of the Nielsen Fourth and Fifth symphonies in good sound, some lacking (and in some cases, purposely eschewing) the intensity and daring of the great interpretations of the past.
But there are high standards---benchmarks---that must be matched or exceeded in order for performances of these works to rise to the status of important and revelatory; standards for identifiable character and lasting impression, standards for swagger, intensity, drama, expressiveness, and the extra outrageousness and fire found in the very best Nielsen. These standards are set by the likes of Ole Schmidt's Fifth with the London Symphony Orchestra, the 1969 Jascha Horenstein with the New Philharmonia (which is never made it to CD), the 1990s renditions of Bryden Thomson on both the Fourth and Fifth (with the same Royal Stockholm Philharmonic that Oramo leads on this disc), and Rafael Kubelik with the Danish Radio Symphony from 1983. Michael Schonwandt's warmer, more centrist Nielsen cycle (a set that includes an outstanding Fifth), with the Danish National Symphony, also offer enough of these qualities to be impressive.
Sakari Oramo's readings here are, as another reviewer put it, "assured", quite clean and well played, but for me, they do not scale the heights of the benchmarks mentioned above. Tempos are well chosen, perhaps a shade quick on certain passages on the Fourth. The side drumming in the Fifth is good but not overwhelming in power (as the Schmidt, Horentein and Kubelik recordings are). Oramo is most similar to Schonwandt in terms of the polished, intelligent, even-tempered overall interpretation, a notch short of Schonwandt on the Fifth, but competitive in the pack that includes Elder, Colin Davis, Chung, Kuchar, Blomstedt, Neeme Jarvi, Leaper, Berglund.
Bottom line: another competent version in good sound, another competitor that does not supplant the legends, but worth hearing.